Allow ports for embed host IPs

app/models/embeddable_host.rb

@@ -40,7 +40,7 @@ class EmbeddableHost < ActiveRecord::Base
 
     def host_must_be_valid
       if host !~ /\A[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,7}(:[0-9]{1,5})?(\/.*)?\Z/i &&
-         host !~ /\A(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\Z/ &&
+         host !~ /\A(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})(:[0-9]{1,5})?(\/.*)?\Z/ &&
          host !~ /\A([a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.)?localhost(\:[0-9]{1,5})?(\/.*)?\Z/i
         errors.add(:host, I18n.t('errors.messages.invalid'))
       end

spec/models/embeddable_host_spec.rb

@@ -38,6 +38,12 @@ describe EmbeddableHost do
     expect(eh.host).to eq('localhost:8080')
   end
 
+  it "supports ports for ip addresses" do
+    eh = EmbeddableHost.new(host: '192.168.0.1:3000')
+    expect(eh).to be_valid
+    expect(eh.host).to eq('192.168.0.1:3000')
+  end
+
   it "supports subdomains of localhost" do
     eh = EmbeddableHost.new(host: 'discourse.localhost')
     expect(eh).to be_valid